Plaster casing bead

ABSTRACT

The application discloses casing bead employed, as on metal lath, for plaster. The casing bead sections are adapted for joinder in abutting end-to-end relation. A splicing clip is utilized as a part of the assembly and interacts with end-to-end abutting sections of the casing bead to hold the same in rigid alignment.

United States Patent OKonski et al.

PLASTER CASING BEAD Inventors: Theodore S. OKonski, Pittsburgh,

Pa; Richard E. Thoman, Galion, Ohio Assignee: Wheeling-Pittsburgh Steel Corporation, Pittsburgh, Pa.

Filed: June 12, 1972 Appl. No.: 261,903

Related US. Application Data Continuation of Ser. No. 95,622, Dec. 7, 1970, abandoned.

US. Cl. 52/726, 52/364 Int. Cl E041 13/06 Field of Search 52/254, 255, 256, 52/726, 716, 58, 127, 367, 371, 364, 354, 355

References Cited UNITED STATES PATENTS Curtis 52/255 Aug. 28, 1973 Mclnemey 52/371 X Slaughter 52/716 Cruser 52/256 Tuten et a1. 52/726 Dalton et al. 52/716 X Primary Examiner-Price C. Faw, Jr. Attorney-Buell, Blenko & Ziesenheim ABSTRACT The application discloses casing bead employed, as on metal lath, for plaster. The casing bead sections are adapted for joinder in abutting end-to-end relation. A splicing clip is utilized as a part of the assembly and interacts with end-to-end abutting sections of the casing bead to hold the same in rigid alignment.

10 Claims, 6 Drawing Figures Patented Aug. 28, 1975 3,754,367

2 Sheets$heet l INVENTORS Theodore S. O'Konski 8| Richard Thomon Patented Aug. 28, 1973 2 Sheets-Sheet 2 INVENTORS Theodore S.O'Konski 8| Richard Thomun PLASTER CASING BEAD This application is a continuation of co-pending application Ser. No. 95,622, filed Dec. 7, 1970, and now abandoned.

The invention herein described relates to specialized lathing material for plaster, and more specifically to plaster casing bead adapted for quick end-to-end splicing and for corner mitering.

Expanded metal lath for plaster is well known and widely used. However, end-to-end joining of sections of existing types of metal lath requires considerable skill and training on the part of the installer, as it is difficult to insure exact alignment of the casing bead on adjoining sections. Also, mitering of the casing bead, as at openings such as windows and doors, requires considerable skill to insure a perfect corner connection.

It is accordingly an object of our invention to provide a casing bead for plaster which enables quick splicing and accurate and rigid alignment of adjoining sections of casing bead by persons with little or no training or skill and also accurate mitering of sections of casing bead, as for door or window openings. I

More specifically, we provide a casing bead as on metal lath for plaster, which is in the form of a channel, one leg of the channel being formed with an inwardly extending ledge. Sections of easing bead to be joined are placed in end-to-end abutting relation and a splicing clip, in channel form, is inserted in straddling relation to the abutting joint and within the casing beads.

The splicing clip which we provide is of channel shape and sized so as to fit snugly within the adjoining casing bead sections, by deformation of the parts as the leg on the clip member is forced under the ledge formed on the leg of the casing bead. Depending on the relative gauges of the metal employed in the parts, deformation of the parts may occur to varying degrees in the clip, the casing bead channels, or both. We further provide transversely aligned V-notches in the opposite legs of the splicing clip, which when snipped at the notches, enable the clip member to be accurately bent on a line normal to the longitudinal axis of the clip member and at any desired mitering angle.

Several different forms of casingbead assemblies em= bodying the invention will be described hereinafter in connection with the accompanying drawings, wherein:

FIG. I shows one form of plaster casing bead and an assembly thereof embodying the invention;

FIG. 2 is a sectional view taken along line ll-II of FIG. 1;

FIG. 3 illustrates the splicing clip shown in FIG. 1;

FIG. 4 illustrates another embodiment of plaster casing bead and an assembly thereof embodying the inven tion;

FIG. 5 is a sectional view taken along line VV of FIG. 4; and

FIG. 6 is a perspective view of the splicing clip shown in FIG. 4.

The plaster casing bead assembly in FIG. 1 comprises two separate sections generally designated 1 and 2. They abut at a joint 3 so as to form a continuous lath. Each of sections 1 and 2 terminates in a relatively solid channel, designated herein as the lower portion of the section. The channel includes a bottom or base 4, an upright leg 5 which is relatively shallow and an upright flange or leg 6 which is relatively longer or deeper than leg 5. Expanded metal material of conventional pattern extends from the outer edge of flange 6 in a direction away from the base 4 of the channel. The casing bead may have an expansion frame with expanded metal as shown in FIG. 1, or it may have a short flange in which the expanded metal is reduced in size or omitted. Also the channel may be square in cross-section as shown in the drawings, or it may be semi-square, quarter round, or any other desired shape. Such sections are designated herein as channels, whether semi-square, quarter round or the like.

The metal wall of flange 6 has been slit and pierced at intervals and the wall section above the slit pressed laterally to fonn protrusions 8. The bottom edges of the protrusions form a ledge 9. Holes 10 are punched at intervals in the flange 6 of the channel section to enable the metal sections to be conveniently nailed or attached by screws to a supporting building structure or framework.

A splicing clip 11, of substantially the same gauge metal as the channel sections 1 and 2, is provided to be fitted within the adjoining sections. The clip has a channel shaped cross-section including a base 12, a short leg 13 and a longer leg 14. Leg 14 is bowed or crimped along a line parallel to the axis of clip 11 as best shown in FIG. 2. Leg I4 is such size that it will fit between bottom 4 of sections 1 and 2 and the series of ledges 9 on protrusions 8. The fit is a tight one and requires a slight deformation of the parts to be accomplished. Leg 14 of clip 11, being slightly crimped, as before described, acts in effect as a spring with deformation occurring by increasing the angle of the bend or crimp running axially along leg 14. Some outward deflection of flange 6 1 with respect to the base 4 of the channel also may occur.

Another form of the invention is shown in FIGS. 4, 5 and 6. It comprises a casing bead assembly having two sections 21 and 22 which abut at a joint 23 so as to form a continuous lath. Each of sections 21 and 22 terminates in a relatively solid channel, designated herein as the lower portion of the section. The channel includes a bottom or base 24, a leg 25 which is relatively shallow or narrow and a flange or leg 26 which is relatively deeper or wider than leg 25. The legs 25 and 2 6 are substantially normal to the base, though the wider leg 26 may, if desired, be inclined slightly inward to an oblique angle with respect to the base 24. Expanded metal material of conventional pattern extends from leg 26 in a direction away from the base 24 of the channel. As mentioned in connection with the previous embodiment, the expanded metal section in this embodiment may be foreshortened or omitted. Also the cross-sectional shape of the channel itself may be varied to some other convenient form. A continuous longitudinal rib 28 is formed as by being rolled into leg 26 and projects inwardly into the general area enclosed by the channel. A lower surface of the substantially V- shaped rib 28 is perpendicular to leg 26 and forms a continuous ledge 29 facing toward the base 24 of the channels. Holes 30 are punched at intervals in leg 26 of the channel sections to enable the casing bead sections to be conveniently nailed or attached by screws to a supporting building structure or framework.

A splicing clip 31 of substantially the same gauge metal as the channel sections 21 and 22 is provided to be fitted within the channel sections 21 and 22. The clip has a cross section of channel shape including a bottom or base 32, a shallow or narrow leg 33 and a deeper or wider leg 34. Leg 34 is bowed or bent along a line parallel to the longitudinal axis of clip 31, as best shown in FIG. 5, for a purpose later explained. Leg 34 is of such width that it can be wedged between base 24 of the channel and the ledge 29 of the rib 28 in each of sections 21 and 22. The fit is a tight one and required some requires of the parts, namely some outward springing of the leg 26 of the channel sections 21 and 22 and some bending of the leg 34 of the clip, the relative deformations depending on the gauge of the metal in the parts. In view of the tight connection between the channel sections and the splicing clip, the clip 31 is frictionally restrained from shifting relative to the sections 21 and 22.

Clip 31 is provided with two spaced semi-rectangular notches 35 in the top or outer edge of leg 26. lnsertion of a tool, such as a screw driver, into the notches 35 and then turning it enables the leg 34 of clips 31 to be readily wedged under rib 28 incidental to splicing of adjoining sections of the casing bead. The curvature of the bowed leg 34 of the clip serves to increase the lateral depth of notches 35, over the thickness of the metal, for better seating of the screw driver incidental to installation of the clip. Moreover, the curvature of the bowed leg 34 of the clip insures application of the force to the leg 26 of the channel sections along a single line under ledge 29, thereby insuring a tighter and more rigid splice.

A V-notch 36 is also provided in the top of leg 26 between notches 35 and a transversely aligned V-notch 37 is provided in the top of leg 25. The ends of sections 21 and 22 may have a burr, particularly in the vicinity of rib 28, if the section is cut in the field with a saw or snips. Notch 36 provides clearance so that clip 31 will fit into place notwithstanding the presence of such a burr. V-notches 36 and 37 also provide a means of alignment for cutting slots in legs 33 and 34. A saw can readily be inserted into the two notches, the legs cut, and the base of the clip bent to a desired mitering angle, such as 90. in that manner two sections of head can be joined at 90 as at the corner of a door or window frame.

The structure in FIGS. 4, and 6 can readily be manufactured by conventional punching and rolling processes. it is of importance that rib 28 be accurately positioned. By a process of rolling, a continuous rib may be precisely sized and located. Rolling makes possible more accurate and certain sizing and avoids irregularities and expenses inherent in a punching or stamping operation.

While we have described several specific embodiments of the invention, it will be understood that variations therein may be made within the terms of the following claims.

We claim:

I. A plaster casing head assembly comprising two channel members disposed in aligned end-to-end abutting relation, each of said channel members having a base and two legs at opposite ends of said base in substantially normal relation thereto, one of said legs having an inwardly extending ledge means thereon, and a splicing clip member of channel shape having a base and two legs substantially normal to said base, sized to engage within said two abutting channel members to hold said channel members in rigid alignment, the outer edge of one of the said legs of the clip member being adapted to be forced under the ledge means on the said one leg of the channel members, the resulting resilient deformation of said members holding the assembly tightly together.

2. A plaster casing bead assembly according to claim 1, wherein the ledge means on the said one leg of the channel members comprises a continuous rib substantially parallel to the base of the channel members.

3. A plaster casing bead assembly according to claim 2, wherein the said continuous rib is of V-shape in cross-section, with the one leg of the rib being substantially perpendicular to the leg of the channel members.

4. A plaster casing bead assembly according to claim 1, wherein the ledge means on the said one leg of the channel members comprises a series of longitudinally spaced protrusions extending inwardly toward the other leg of the channel member.

5. A plaster casing bead assembly according to claim 1, wherein the ledge means on the said one leg of the channel members comprises a series of longitudinally spaced protuberances formed by slitting the leg at intervals and pressing the areas above the slits inwardly.

6. A plaster casing bead assembly according to claim 1, wherein the said outer edge of the said one of said legs of the clip member has notches therein in which to receive a tool which when turned therein forces the leg of the clip member under the said ledge means on the one leg of the channel member.

7. A plaster casing bead assembly according to claim 1, wherein the said one leg of the clip member is bent transversely so that when the leg is engaged under the said ledge on the channel members it contacts the channel members along a single line of contact.

8. A plaster casing bead assembly according to claim 7, wherein semi-rectangular notches are provided in the outer edge of the said one leg of the clip member.

9. A plaster casing bead assembly according to claim 1, wherein transversely aligned notches are formed in the opposite legs of the clip member, said notches being ineffective to weaken the legs of the clip member unless the legs are cut at said notches toward the base, and wherein the base of the clip member may then be bent to a desired angle at said notches for mitering the casing bead channel members.

10. A plaster casing bead assembly according to claim 9, wherein the said transversely aligned notches in the opposite legs of the clip member are of V-shape. l 4 t i i UNITED STATES PATENT OFFICE CERTIFICATE 0F CORRECTiON Patent No. 3, 754 367 Dated August 28 1973 Inventor(s) Theodore S. O'Konski and Richard E. Thoman It is certified that error appears in the above-identified patent and that said Letters "Patent are hereby corrected as shown below:

Column 3; line 6, "required" should be -requires.

Column 3, line 7, "requires" should be --deformation-.

Column 3, line 38, "into" should be -in.

Signed and sealed this 12th day of March 1971 (SEAL) Attest:

EDWARD M.FLETCHER,JR. C. MARSHALL DANN Attesting Officer Commissioner of Patents FORM P0405) USCOMM-DC wan-pas U.S GOVERNMENT PRINTING OFFICE I I", :||-lal, 

1. A plaster casing bead assembly comprising two channel members disposed in aligned end-to-end abutting relation, each of said channel members having a base and two legs at opposite ends of said base in substantially normal relation thereto, one of said legs having an inwardly extending ledge means thereon, and a splicing clip member of channel shape having a base and two legs substantially normal to said base, sized to engage within said two abutting channel members to hold said channel members in rigid alignment, the outer edge of one of the said legs of the clip member being adapted to be forced under the ledge means on the said one leg of the channel members, the resulting resilient deformation of said members holding the assembly tightly together.
 2. A plaster casing bead assembly according to claim 1, wherein the ledge means on the said one leg of the channel members comprises a continuous rib substantially parallel to the base of the channel members.
 3. A plaster casing bead assembly according to claim 2, wherein the said continuous rib is of V-shape in cross-section, with the one leg of the rib being substantially perpendicular to the leg of the channel members.
 4. A plaster casing bead assembly according to claim 1, wherein the ledge means on tHe said one leg of the channel members comprises a series of longitudinally spaced protrusions extending inwardly toward the other leg of the channel member.
 5. A plaster casing bead assembly according to claim 1, wherein the ledge means on the said one leg of the channel members comprises a series of longitudinally spaced protuberances formed by slitting the leg at intervals and pressing the areas above the slits inwardly.
 6. A plaster casing bead assembly according to claim 1, wherein the said outer edge of the said one of said legs of the clip member has notches therein in which to receive a tool which when turned therein forces the leg of the clip member under the said ledge means on the one leg of the channel member.
 7. A plaster casing bead assembly according to claim 1, wherein the said one leg of the clip member is bent transversely so that when the leg is engaged under the said ledge on the channel members it contacts the channel members along a single line of contact.
 8. A plaster casing bead assembly according to claim 7, wherein semi-rectangular notches are provided in the outer edge of the said one leg of the clip member.
 9. A plaster casing bead assembly according to claim 1, wherein transversely aligned notches are formed in the opposite legs of the clip member, said notches being ineffective to weaken the legs of the clip member unless the legs are cut at said notches toward the base, and wherein the base of the clip member may then be bent to a desired angle at said notches for mitering the casing bead channel members.
 10. A plaster casing bead assembly according to claim 9, wherein the said transversely aligned notches in the opposite legs of the clip member are of V-shape. 